Odd-frequency Cooper pairs and zero-energy surface bound states in superfluid 3He

S. Higashitani, S. Matsuo, Y. Nagato, K. Nagai, S. Murakawa, R. Nomura, Y. Okuda

研究成果: Article査読

28 被引用数 (Scopus)

抄録

We study the odd-frequency Cooper pairs formed near the surface of superfluid 3He. The odd-frequency pair amplitude is closely related to the local density of states in the low-energy limit. We derive a formula relating explicitly the two quantities. This formula holds for an arbitrary boundary condition at the surface. We also present some numerical results on the surface odd-frequency pair amplitude in superfluid 3He-B. Those analytical and numerical results allow one to interpret the midgap surface density of states, observed recently by transverse acoustic impedance measurements on superfluid 3He-B, as the manifestation of the surface odd-frequency state.

本文言語English
論文番号024524
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
85
2
DOI
出版ステータスPublished - 2012 1月 12
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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